Paper - The development of the mucous membrane oesophagus stomach and small intestine in human embryo: Difference between revisions
mNo edit summary |
mNo edit summary |
||
Line 11: | Line 11: | ||
From the Department of Comparative Anatomy, Harvard Medical School | From the Department of Comparative Anatomy, Harvard Medical School | ||
With | With Twenty-Four Figures Seven Plates | ||
==Introduction== | |||
The development of the mucous membrane of the digestive tract, although studied for many years by competent observers, still affords opportunity for further investigation. The present work was undertaken for the purpose of studying the development of the structures found in the digestive tract, and to obtain a comparable- series of wax reconstructions illustrating the changes that take place in the form of the mucosa. Especial stress has been laid on the development of vacuoles and diverticula, villi, glands, and folds. It was originally intended to include the development of the mucous membrane of the vermiform process and the large intestine, but for lack of favorable material, this has been omitted in the present paper. This work was suggested by Dr. F. T. Lewis, and has been done in connection with his chapter on the digestive tract for Keibel’s Text Book of Human Embryology. A more complete review of the literature than is here given, will be found in .)r. Lewis’ chapter. | The development of the mucous membrane of the digestive tract, although studied for many years by competent observers, still affords opportunity for further investigation. The present work was undertaken for the purpose of studying the development of the structures found in the digestive tract, and to obtain a comparable- series of wax reconstructions illustrating the changes that take place in the form of the mucosa. Especial stress has been laid on the development of vacuoles and diverticula, villi, glands, and folds. It was originally intended to include the development of the mucous membrane of the vermiform process and the large intestine, but for lack of favorable material, this has been omitted in the present paper. This work was suggested by Dr. F. T. Lewis, and has been done in connection with his chapter on the digestive tract for Keibel’s Text Book of Human Embryology. A more complete review of the literature than is here given, will be found in .)r. Lewis’ chapter. | ||
The material used was obtained from human embryos in the Harvard Collection; The earlier stages were already prepared in the embryological collection. The crown rump lengths and series numbers of these are as follows: | The material used was obtained from human embryos in the Harvard Collection; The earlier stages were already prepared in the embryological collection. The crown rump lengths and series numbers of these are as follows: | ||
{| | {| | ||
! Length in mm. | |-bgcolor="CEDFF2" | ||
! Series No. | ! colwidth=300px|Length in mm. | ||
! colwidth=300px|Series No. | |||
|- | |- | ||
| 7.5 | | 7.5 | ||
| 256 | | 256 | ||
|- | |-bgcolor="F5FAFF" | ||
| 10 | | 10 | ||
| 1000 | | 1000 | ||
Line 30: | Line 33: | ||
| 16 | | 16 | ||
| 1322 | | 1322 | ||
|- | |-bgcolor="F5FAFF" | ||
| 19 | | 19 | ||
| 819 | | 819 | ||
Line 36: | Line 39: | ||
| 19 | | 19 | ||
| 828 | | 828 | ||
|- | |-bgcolor="F5FAFF" | ||
| 22 | | 22 | ||
| 851 | | 851 | ||
Line 42: | Line 45: | ||
| 22.8 | | 22.8 | ||
| 871 | | 871 | ||
|- | |-bgcolor="F5FAFF" | ||
| 22.8 | | 22.8 | ||
| 737 | | 737 | ||
Line 48: | Line 51: | ||
| 23 | | 23 | ||
| 181 | | 181 | ||
|- | |-bgcolor="F5FAFF" | ||
| 24 | | 24 | ||
| 24 | | 24 | ||
Line 54: | Line 57: | ||
| 29 | | 29 | ||
| 914 | | 914 | ||
|- | |-bgcolor="F5FAFF" | ||
| 30 | | 30 | ||
| 913 | | 913 | ||
Line 60: | Line 63: | ||
| 32 | | 32 | ||
| 649 | | 649 | ||
|- | |-bgcolor="F5FAFF" | ||
| 37 | | 37 | ||
| 820 | | 820 | ||
Line 66: | Line 69: | ||
| 42 | | 42 | ||
| 838 | | 838 | ||
|- | |-bgcolor="F5FAFF" | ||
| 78 (incomplete series) | | 78 (incomplete series) | ||
| 723,724 | | 723,724 | ||
Line 76: | Line 79: | ||
! Length in mm. | ! Length in mm. | ||
! Series No. | ! Series No. | ||
|- | |- | ||
| 55 | | 55 | ||
| 249 | | 249 | ||
|- | |-bgcolor="F5FAFF" | ||
| 73 | | 73 | ||
| 116 | | 116 | ||
Line 86: | Line 88: | ||
| 78 | | 78 | ||
| 142 | | 142 | ||
|- | |-bgcolor="F5FAFF" | ||
| 91 | | 91 | ||
| 224 | | 224 | ||
Line 92: | Line 94: | ||
| 99 | | 99 | ||
| 340 | | 340 | ||
|- | |-bgcolor="F5FAFF" | ||
| 120 | | 120 | ||
| 342 | | 342 | ||
Line 98: | Line 100: | ||
| 120 | | 120 | ||
| 203 | | 203 | ||
|- | |-bgcolor="F5FAFF" | ||
| 134 | | 134 | ||
| 30 | | 30 | ||
Line 104: | Line 106: | ||
| 145 | | 145 | ||
| 131 | | 131 | ||
|- | |-bgcolor="F5FAFF" | ||
| 187 | | 187 | ||
| 315 | | 315 | ||
Line 110: | Line 112: | ||
| 240 | | 240 | ||
| 186 | | 186 | ||
|- | |-bgcolor="F5FAFF" | ||
| Newborn | | Newborn | ||
| 341 | | 341 |
Revision as of 12:45, 18 November 2016
Embryology - 3 Jun 2024 Expand to Translate |
---|
Google Translate - select your language from the list shown below (this will open a new external page) |
العربية | català | 中文 | 中國傳統的 | français | Deutsche | עִברִית | हिंदी | bahasa Indonesia | italiano | 日本語 | 한국어 | မြန်မာ | Pilipino | Polskie | português | ਪੰਜਾਬੀ ਦੇ | Română | русский | Español | Swahili | Svensk | ไทย | Türkçe | اردو | ייִדיש | Tiếng Việt These external translations are automated and may not be accurate. (More? About Translations) |
Johnson FP. The development of the mucous membrane of the oesophagus, stomach and small intestine in the human embryo. (1910) Amer. J Anat., 10: 521-559.
Historic Disclaimer - information about historic embryology pages |
---|
Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding. (More? Embryology History | Historic Embryology Papers) |
See also Johnson FP. The development of the rectum in the human embryo. (1914) Amer. J Anat. 16(1): 1-58.
The Development of the Mucous Membrane of the Oesophagus, Stomach And Small Intestine In the Human Embryo
Franklin P. Johnson
From the Department of Comparative Anatomy, Harvard Medical School
With Twenty-Four Figures Seven Plates
Introduction
The development of the mucous membrane of the digestive tract, although studied for many years by competent observers, still affords opportunity for further investigation. The present work was undertaken for the purpose of studying the development of the structures found in the digestive tract, and to obtain a comparable- series of wax reconstructions illustrating the changes that take place in the form of the mucosa. Especial stress has been laid on the development of vacuoles and diverticula, villi, glands, and folds. It was originally intended to include the development of the mucous membrane of the vermiform process and the large intestine, but for lack of favorable material, this has been omitted in the present paper. This work was suggested by Dr. F. T. Lewis, and has been done in connection with his chapter on the digestive tract for Keibel’s Text Book of Human Embryology. A more complete review of the literature than is here given, will be found in .)r. Lewis’ chapter.
The material used was obtained from human embryos in the Harvard Collection; The earlier stages were already prepared in the embryological collection. The crown rump lengths and series numbers of these are as follows:
Length in mm. | Series No. |
---|---|
7.5 | 256 |
10 | 1000 |
16 | 1322 |
19 | 819 |
19 | 828 |
22 | 851 |
22.8 | 871 |
22.8 | 737 |
23 | 181 |
24 | 24 |
29 | 914 |
30 | 913 |
32 | 649 |
37 | 820 |
42 | 838 |
78 (incomplete series) | 723,724 |
The crown-rump lengths and numbers of the older embryos used are as follows:
Length in mm. | Series No. |
---|---|
55 | 249 |
73 | 116 |
78 | 142 |
91 | 224 |
99 | 340 |
120 | 342 |
120 | 203 |
134 | 30 |
145 | 131 |
187 | 315 |
240 | 186 |
Newborn | 341 |
From the older embryos, the different parts of the digestive tract were separately removed, imbedded in paraffin, and cut in serial sections of 8 microns in thickness. The sections were stained by different methods, among which were Heidenhain’s iron haematoxylin, Hansen’s iron haemotoxylin, and Mallory’s aniline blue connective tissue stain. Both eosin and orange G were used as counter stains. From the preparations thus made, certain stages of development were selected, and a number of Wax reconstructions made. The models have in most cases been made to the magnification of 145 diameters, so as to be easily compared. However, in some of the gland models, this magnification was doubled, and in others trebled.
Oesophagus
Early Stages. In an embryo of 7.5 mm., the oesophagus is a cylindrical tube of epithelium extending from the pharynx to the stomach. The lumen is round and relatively large at its upper end, but tapers gradually until at its middle it is quite small. Passing downward from this region, the oesophagus gradually increases in size and at its lower end leads into the stomach, there
Cite this page: Hill, M.A. (2024, June 3) Embryology Paper - The development of the mucous membrane oesophagus stomach and small intestine in human embryo. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Paper_-_The_development_of_the_mucous_membrane_oesophagus_stomach_and_small_intestine_in_human_embryo
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G